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# CBSE Class 12 Physics Syllabus 2020-2021 - Detailed Syllabus - eSaral

According to the CBSE board class 12 Physics syllabus of session 2020 - 2021 will be the same as session 2019 - 2020 which means there will be no change in the syllabus.

By going through the syllabus students will get the idea about all the units and chapters of class 12 Physics.

 CHAPTER TOPICS Chapter–1 Electric Charges and Fields Electric Charges Conservation of charge, Coulomb's law-force between two point charges Forces between multiple charges superposition principle and continuous charge distribution. Electric field Electric field due to a point charge, electric field lines, electric dipole, electric field due to a dipole, torque on a dipole in uniform electric fleld. Electric flux, statement of Gauss's theorem and its applications to find field due to infinitely long straight wire uniformly charged infinite plane sheet and uniformly charged thin spherical shell (field inside and outside). Chapter–2 Electrostatic Potential and Capacitance Electric potential, potential difference, electric potential due to a point charge, A dipole and system of charges Equipotential surfaces, electrical potential energy of a system of two point charges and of electric dipole in an electrostatic field. Conductors and insulators, free charges and bound charges inside a conductor. Dielectrics and electric polarisation, capacitors and capacitance Combination of capacitors in series and in parallel, capacitance of a parallel plate capacitor with and without dielectric medium between the plates Energy stored in a capacitor. Chapter–3 Current Electricity Electric current, flow of electric charges in a metallic conductor, drift velocity mobility and their relation with electric current; Ohm's law electrical resistance V-I characteristics (linear and non-linear), electrical energy and power, electrical resistivity and conductivity Carbon resistors, colour code for carbon resistors Series and parallel combinations of resistors Temperature dependence of resistance. Internal resistance of a cell, potential difference and emf of a cell Combination of cells in series and in parallel Kirchhoff's laws and simple applications Wheatstone bridge, metre bridge Potentiometer - principle and its applications to measure potential difference and for comparing EMF of two cells; measurement of internal resistance of a cell Chapter–4 Moving Charges and Magnetism Concept of magnetic field, Oersted's experiment Biot - Savart law and its application to current carrying circular loop Ampere's law and its applications to infinitely long straight wire Straight and toroidal solenoids (only qualitative treatment) Force on a moving charge in uniform magnetic and electric fields, Cyclotron Force on a current-carrying conductor in a uniform magnetic field Force between two parallel current-carrying conductors-definition of ampere Torque experienced by a current loop in uniform magnetic field Moving coil galvanometer-its current sensitivity and conversion to ammeter and voltmeter Chapter–5 Magnetism and Matter Current loop as a magnetic dipole and its magnetic dipole moment Magnetic dipole moment of a revolving electron Magnetic field intensity due to a magnetic dipole (bar magnet) along its axis and perpendicular to its axis Torque on a magnetic dipole (bar magnet) in a uniform magnetic field Bar magnet as an equivalent solenoid, magnetic field lines; earth's magnetic field and magnetic elements Para-, dia- and ferro - magnetic substances, with examples Electromagnets and factors affecting their strengths, permanent magnets Chapter–6 Electromagnetic Induction Electromagnetic induction Faraday's laws induced EMF and current Lenz's Law Eddy currents Self and mutual induction Chapter–7 Alternating Current Alternating currents Peak and RMS value of alternating current/voltage Reactance and impedance LC oscillations (qualitative treatment only) LCR series circuit, resonance; power in AC circuits, power factor, wattless current AC generator and transformer Chapter–8 Electromagnetic Waves Basic idea of displacement current Electromagnetic waves, their characteristics, their Transverse nature (qualitative ideas only) Electromagnetic spectrum (radio waves, microwaves, infrared, visible, ultraviolet, X-rays, gamma rays) including elementary facts about their uses Chapter–9 Ray Optics and Optical Instruments Ray Optics: Reflection of light, spherical mirrors, mirror formula, refraction of light, total internal reflection and its applications, optical fibers, refraction at spherical surfaces, lenses, thin lens formula, lensmaker's formula, magnification, power of a lens, combination of thin lenses in contact, refraction of light through a prism Scattering of light - blue colour of sky and reddish appearance of the sun at sunrise and sunset Optical instruments: Microscopes and astronomical telescopes (reflecting and refracting) and their magnifying powers Chapter-10 Wave Optics Wave front and Huygen's principle, reflection and refraction of plane wave at a plane surface using wave fronts Proof of laws of reflection and refraction using Huygen's principle Interference, Young's double slit experiment and expression for fringe width Coherent sources and sustained interference of light Diffraction due to a single slit, width of central maximum Resolving power of microscope and astronomical telescope Polarisation, Plane polarised light Brewster's law, uses of plane polarised light and Polaroids Chapter–11 Dual Nature of Radiation and Matter Dual nature of radiation Photoelectric effect Hertz and Lenard's observations Einstein's photoelectric equation-particle nature of light Matter waves-wave nature of particles, de-Broglie relation Davisson-Germer experiment (experimental details should be omitted; only conclusion should be explained) Chapter–12 Atoms Alpha-particle scattering experiment Rutherford's model of atom Bohr model, Energy levels, hydrogen spectrum Chapter–13 Nuclei Composition and size of nucleus Radioactivity, alpha, beta and gamma particles/rays and their properties; radioactive decay law Mass-energy relation, mass defect; binding energy per nucleon and its variation with mass number; nuclear fission, nuclear fusion Chapter–14 Semiconductor Electronics: Materials, Devices and Simple Circuits Energy bands in conductors, semiconductors and insulators (qualitative ideas only) Semiconductor diode - I-V characteristics in forward and reverse bias, diode as a rectifier Special purpose p-n junction diodes: LED, photodiode, solar cell and Zener diode and their characteristics, zener diode as a voltage regulator

## Class 12 Physics Chapters

1. Electric Charge and Fields
2. Electrostatic Potential and Capacitance
3. Current Electricity, Chemical Effects of Electric Current,
4. Thermoelectric Effects of Electric Current
5. Heating Effects of Electric Current
6. Moving Charges and Magnetism
7. Magnetism and Matter
8. Electromagnetic Induction
9. Alternating Current
10. Electromagnetic Wave
11. Ray Optics and Optical Instruments
12. Wave Optics
13. Dual Nature of Radiation and Matter
14. Atoms
15. Nuclei
16. Semiconductor Electronics: Materials, Devices and Simple Circuits.

To learn these chapters in Details you can also refer Class 12 Physics Notes.

CBSE Class 12 Physics Syllabus includes lots of different concepts of Physics. These topics will helps you to build a good foundation to learn Advanced concepts of Physics.